Carbohydrates Test: • Benedict's Test: Uses a bright blue liquid to detect the presence of monosaccharides and certain disaccharides.
Iodine Solution Test:
Uses a piece of test material to detect starch. • Protein Test: Uses a mixture of beans, soup powder, and sodium hydroxide to test for protein. • Protein Test: Blue indicates no proteins, Violet indicates proteins.
Lipids Test: • Uses a mixture of ground peanuts, ether, and ether to test for lipids. • Filter the ether and observe if any grease is present.
Summary of Food Test Results
• Benedict test: Blue for simple sugars. • Iodine solution: Orange-brown, Blue-black, Orange-brown for starch. • Copper Sulphate & Sodium Hydroxide solutions: Blue for proteins. • Ether/Ethanol test: Colorless, no grease stain on filter paper.